Question

When the kinetic energy of an electron is increased, the wavelength of the associated wave will ______.

Options

• increase

• decrease

• remain same

• become twice 

Answer 1

When the kinetic energy of an electron is increased, the wavelength of the associated wave will decrease.

Explanation:

` lambda = "h"/"p" = "h"/sqrt(2"mE")`

`therefore lambda  alpha  1/sqrt("E")` (h and m = constant)